Even though my exhaust go to the rear, I still get a headache with the fumes and my clothes smell like my exhaust.

I have a 84 Z28 with no cats. Two 2.5'' that Y's into One 3 inch pipe feeding a Flowmaster that exits the very rear of the car. Installed on a 350 SBC are the Headers, 650 Holley dblpump, 190 AFRs and 286Xtreme Roller Cam/Rockers. In other words, all the OEM emissions equipment is history.

Should I install some catco cats to reduce the fumes? If so will I need to add an air pump with the air pipe?

Will Cats help even with all these mods including a 650 Holley dbp which is known to have a rich idle circuit?

Thanks...

 

The cats won't reduce the amt of exhaust, but will reduce a lot of the chemicals that your body finds irratating. A high flow one will only cost you like 1hp if that, so i say go for it.

I found out that the reason my exhaust on my car bothers me so much more than any other car was because the person before me gutted the cat...

 

Since I no longer have any original emissions equipment installed, would I have to install an air pump/pipes or just weld the cat to the pipe and go?

 

the AIR system is seperate. Just get a normal cat without an AIR fitting. Then just weld it up. Its that easy.

 

Cool! Hopefully it will eliminate the irritating fumes.

Thanks

 

make sure you dont have an exhaust leak also....that could be giving you a headache...same thing happened to my friend with his 69 camaro

 

I would get a cat that does not have an AIR fitting. Capping it shut will cause the cat to not work properly and it can clog over time. My cat is capped and I know I am on bidding time.

 

Hey Supercharged84Z, how big was you friend’s exhaust leak? Was it just a little tick, tick, ticking type of leak or a big gapping one?

Reason I ask is I have a small leak. You can hear slight ticking sound. But I didn't think it was big enough to be the culprit. Or could I wrong that?

 

Agreed ShiftyCapone. The Cat minus the AIR tube is the way to go.

 

it was a decent sized leak, but it wasnt insanely obvious. it also depends on how sensitive you are...it could be a small leak but maybe you're just really sensitive to those types of gasses.

 

you also said you smell like fumes, too. maybe that little leak is bigger than you think...

 

There was a giant rip in the side of my stock cat...not to mention the person before me gutted it. No wonder my exhaust was so loud. I was always running open headers.


Not to mention the damn fumes...Yuck

 

replace the seal under your hoods cowl that will keep the stink from getting in